O.S. Long Prop Nut 5/16"-24

Tower Stock# LXXF35  •  Manufacturer Stock# 73101010
O.S. Long Prop Nut 5/16
Regularly Purchased Together
Although customers also purchased these, compatibility is not guaranteed. Click an item for product details.

Notes from our tech department:
This is an 5/16" - 24 Long Prop Nut and Washer Set for the
O.S. Max .60FP, .65LA, .61FX, .91FX Engines.


Metal construction.
For use where an extra thick propeller boss (center) and/or spinner
backplate does not leave enough threads for a standard propeller
nut to tighten down onto the propeller. This nut has an extension
that goes through the propeller and then extends out past the end
of the crankshaft with a hex nut for tightening.
This also helps keep the propeller on the engine in the case of
backfiring or detonation.


One prop nut with 5/16"- 24 threading
One prop washer


9/16" open end wrench (15mm is slightly too big)


Propeller Nut- Extension Outer Diameter: 9.6mm
Extension Length: 13mm
Overall Length: 20mm
Inner Threading: 5/16" x 24
Propeller Washer- Inner Diameter: 10mm
Outer Diameter: 28mm
dew 3/24/01

Parts Compatibility
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